Provide an appropriate response.The following table lists the population change over a 20-year period for selected countries. List the countries that had a decline in population during this period 
A. C and D
B. B and D
C. B
D. A and C
Answer: B
Mathematics
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Find the product. Write the product in rectangular form, using exact values.[4 cis 120°] [5 cis 120°]
A. -10 - 10
i
B. -10
+ 10i
C. 10 + 10
i
D. 10
- 10i
Mathematics
Provide the proper response.Discuss the graph of the equation 
+ 
= 1 if a = b.
What will be an ideal response?
Mathematics
Write the vector in the form ai + bj. Round a and b to 3 decimal places if necessary.
A. 3i + 7j B. -3i + 7j C. 7i + 3j D. 7i - 3j
Mathematics
Provide an appropriate response.Find an equation for the tangent to the curve y = 
at the point (1, 5).
A. y = x + 5 B. y = 5x C. y = 0 D. y = 5
Mathematics